Forging-machine.



2 SHEETS-SHEET 1.

PATENTBD'OGT. 13,1903. o. BRIEDB. FORGING MACHINE. APPLICATION FILEDAUG. 13. 1901.

No MODL.

No. 741,301. I P ATENTBD OCT. 113, 1903. 0. BRIEDB.

FORGING MACHINE.

APPLIGATION FILED AUG. 13, 1901.

'ANO MODEL. v 2 SHEETS-SHEET 2.

me Nonnvs PEYERs co., Haw-Limo., wAsmNaYnN. n. c.

Eatented October 13, 1903.

nient trice,

OTTO BRIEDE, OF BENRATH, GERMANY.

SEEO'lFIA'LION forming part of Letters Patent No. 741,301, dated October13, 1903i.

Application filed August 13, 1901. Serial No. 71,925. (No inoA1 To a/ZZwhom t may concern:

Be it known that I, OTTO BRIEDE, a subject of the King of Prussia,German Emperor, and a resident ofBenrath, near Dusseldorf, in theProvince of the Rhine, German Empire, have invented a new and ImprovedForging-Machine, of which the followingis an exact specication.

My invention relates to a new and improved forging-machine by means ofwhich any kind of figured bars or tubes can be manufactured. Y

My invention is represented in the accompanying drawings, in which pFigure 1 shows a vertical section of the machine. Fig. 2 is a front viewof the same. Fig. 3 is a vertical section in another position, with thepiece to be forged situated within the same.

In the machine-frame a two sector-formed parts b and c are pivoted at kand Z either by means of bolts or by means of the Wedgeshaped edge ofthe same being situated within grooves provided in the frame a, as shownin the drawings. These two parts b and c are connected to each other bymeans of toothed bars r, so that in case one of the sector-formed piecesb or c-is oscillated the other one oscillates in the same direction. Toone of the parts b and c a connecting-rod fis pivoted, whichconnecting-rod connects this part with a crank e, fixedrto a shaft 'L'.This shaft t' can be rotated in any convenient manner. Those surfaces ofthe parts b and c facing each other are provided with grooves d, theform of which corresponds to the form of the bars or tubes to be forged.The diameter of these grooves between the points g g is the same allover, 'while at h h2 h3 h4 the diameter of the grooves graduallyenlarges. Now in case the piece u, Fig. 3, to be' forged is brought intothese grooves during the time the pieces b and c are oscillated thispiece u will by the oscillation of the parts b and c be pressed into theform which the grooves have between the points g g. It will beunderstood that in the space between the points 714 and h' the forgingproper takes place, while in the space between the points g g the pieceis fiattened and smoothed. In case a pipe shall be forged a mandrel scan be used, as shown in Fig. 3 of the drawings.

Now in order to attain that it is not necessary to change the parts band c in case figured bars or tubes of different diameters, but of thesame form, shall be forged, the following arrangement is provided: Thebearings m for the crank-shaft t' are not rigidly attached to the framed of the machine, but are movable to and fro in guides n, provided inthe foundation-plate of the same. The moving of the bearings is effectedby means of a spindle o, journaled at p, the threads of which spindleengage in a nut n', rigidly attached to the bearing m, so that byturning the spindle the beari-ng m is moved. The turning of the spindleis effected by means of a hand-wheel q or in any other convenientmanner.

Now in case the bearing m is moved in the direction of the arrow z5,Fig. '1, the efect of the operation of the machine is changed on accountof another part of the grooves d coming in contact with the piece u tobe forgedthat is to say, instead of that part of the grooves situatedbetween the points g g coming in contact with the piece u, to be forgedat the end of each return stroke the points h2 or h3, rbc., of the sainewill be in contact with the piece fu, at the end of each stroke, so thatthe part between the points g g does no more come in contact with thesame at all. It is herewith attained that the piece to be forged adaptsthe form which thegrooves d have on that point which comes in contactwith the same at the end of the stroke. It further is attained by thisarrangement that the diameter of the pieces to be forged can begradually enlarged by moving the bearings during the forging operation,so that forging-pieces of a conical form can be manufactured and alsosuch pieces the diameter of which alternately enlarges and diminishes.rThe cone shape of the forged piece depends upon the velocity with whichthe bearings m are moved during the forging operation.

Having thus fully described the nature of this invention, what I desireto secure by Letters Patent of the United States is- In a forging-press,the combination of ossillating swages, provided with grooves thediameters of which increase in one direction, a xed frame in which theswages are pivoted, a crank-shaft for oscillating the swages,

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a bearing in which the crank-shaft is journame to this specification inthe presence of naled, and means for moving this bearing so tWosubscribing witnesses.

as to change the distance between the crankshaft and the pivots of theswages, substan- OTP() BRIEDE tially as described and for the purposeset Witnesses: forth. o PETER LIEBER,

In testimony whereof I have signed my I HANS WILHELM FEIDERICHSON,

